Organizers of an off-the-wall DNA test claimed on Thursday to have proven that Michael Jackson is the biological father of singer Brandon Howard.

But a source close to the Jackson clan told the Daily News that it was Joe Jackson — the King of Pop’s pop — who is the actual father.

Howard, who is believed to have been born in 1981, has long been rumored to be the child Jackson referenced in the 1982 hit “Billie Jean” with the line: “The kid is not my son.”

The Jackson family has long been aware of speculation that Howard is Michael Jackson’s son. They just don’t buy it.

“I’ve been hearing for years that Brandon is Joe’s son,” the source said.

Confusing the issue more is that singer Augie Johnson has declared that he is Howard’s real father, the International Business Times reported. Augie, 65, was a backup singer on Michael Jackon’s 1979 album, “Off The Wall.”

Attempts to reach Howard, who does not have a birth certificate, were not immediately successful. His mother, 53-year-old pop singer Miki Howard, was reportedly repped by Jackson family patriarch Joe Jackson in the 1980s. She also appeared in the 1993 movie “Poetic Justice” with Janet Jackson.

The genetic mystery — is he Jacko’s son or his brother — reached a bizarre peak at a press conference in Beverly Hills on Thursday that was organized by shipping heir Alki David and streamed live on his FilmOn.com website. Brandon Howard wasn’t present for the hyped announcement but confirmed in a Facebook post that he gave a DNA sample for the test.

Dr. Joseph Goodman, a Beverly Hills dental surgeon, revealed the results, and claimed he obtained a sample of Michael Jackson’s DNA from a dental device that had belonged to the “Thriller” singer. He purchased the device at auction.

Goodman pulled a piece of paper from an envelope and said the test showed the “probability” of the King of Pop being a parental match was “99.9 percent.”

“I think we have the proof,” Goodman declared.

Despite Goodman’s claim, the paperwork did not include the names of the test subjects or the name of a testing lab, but David told viewers such tests are typically done anonymously and that other information was redacted as a security safeguard.

“I’m sure that there will be doubters and there will be haters and there will be those who create, build a controversy, but it is what it is,” David said.